Hello! I have a big problem right now! a month ago I dis a really mess with my mac, because I installed windows, I formated my disk instead of the partition I created... well the mac have a new hard disk now. After that i got problems with some software spacially my miscrosoft Office, one day I was writing something and the mac start going crazy, always "thinking" too much to do what ever he need. Now I just have OSX 10.5.1 installed, but I work with video as photography, I really need this computer to work just fine. I thought that the problem could me the RAM, but I have 2,4 GHZ. There is someone who can helpe me to put my mac ok again?